40509370 has 32 divisors (see below), whose sum is σ = 80274240. Its totient is φ = 14595840.

The previous prime is 40509367. The next prime is 40509373. The reversal of 40509370 is 7390504.

It is an interprime number because it is at equal distance from previous prime (40509367) and next prime (40509373).

It is not an unprimeable number, because it can be changed into a prime (40509373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10801 + ... + 14059.

It is an arithmetic number, because the mean of its divisors is an integer number (2508570).

Almost surely, 2^40509370 is an apocalyptic number.

40509370 is a deficient number, since it is larger than the sum of its proper divisors (39764870).

40509370 is a wasteful number, since it uses less digits than its factorization.

40509370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 40509370 is about 6364.6971648304. The cubic root of 40509370 is about 343.4407546064.

Adding to 40509370 its reverse (7390504), we get a palindrome (47899874).

The spelling of 40509370 in words is "forty million, five hundred nine thousand, three hundred seventy".